﻿// Copyright 2007-2016 Chris Patterson, Dru Sellers, Travis Smith, et. al.
//  
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the 
// License at 
// 
//     http://www.apache.org/licenses/LICENSE-2.0 
// 
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
// CONDITIONS OF ANY KIND, either express or implied. See the License for the 
// specific language governing permissions and limitations under the License.
namespace MassTransit
{
    using System;
    using System.Threading.Tasks;
    using Events;


    /// <summary>
    /// Used to observe the events signaled by a receive endpoint
    /// </summary>
    public interface IReceiveTransportObserver
    {
        /// <summary>
        /// Called when the receive endpoint is ready to receive messages
        /// </summary>
        /// <param name="ready"></param>
        /// <returns></returns>
        Task Ready(ReceiveTransportReady ready);

        /// <summary>
        /// Called when the receive endpoint has completed
        /// </summary>
        /// <param name="completed"></param>
        /// <returns></returns>
        Task Completed(ReceiveTransportCompleted completed);

        /// <summary>
        /// Called when the receive endpoint faults
        /// </summary>
        /// <param name="faulted"></param>
        /// <returns></returns>
        Task Faulted(ReceiveTransportFaulted faulted);
    }


    public static class ReceiveTransportObserverExtensions
    {
        public static Task NotifyReady(this IReceiveTransportObserver observer, Uri inputAddress)
        {
            return observer.Ready(new ReceiveTransportReadyEvent(inputAddress));
        }
    }
}